drm/amdgpu:add fw-vram-usage for atomfirmware

otherwise PF & VF exchange is broken
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c

@@ -71,19 +71,33 @@ int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
 	struct atom_context *ctx = adev->mode_info.atom_context;
 	int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
 						vram_usagebyfirmware);
+	struct vram_usagebyfirmware_v2_1 *	firmware_usage;
+	uint32_t start_addr, size;
 	uint16_t data_offset;
 	int usage_bytes = 0;
 
 	if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
-		struct vram_usagebyfirmware_v2_1 *firmware_usage =
-			(struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
-
+		firmware_usage = (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
 		DRM_DEBUG("atom firmware requested %08x %dkb fw %dkb drv\n",
 			  le32_to_cpu(firmware_usage->start_address_in_kb),
 			  le16_to_cpu(firmware_usage->used_by_firmware_in_kb),
 			  le16_to_cpu(firmware_usage->used_by_driver_in_kb));
 
-		usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) * 1024;
+		start_addr = le32_to_cpu(firmware_usage->start_address_in_kb);
+		size = le16_to_cpu(firmware_usage->used_by_firmware_in_kb);
+
+		if ((uint32_t)(start_addr & ATOM_VRAM_OPERATION_FLAGS_MASK) ==
+			(uint32_t)(ATOM_VRAM_BLOCK_SRIOV_MSG_SHARE_RESERVATION <<
+			ATOM_VRAM_OPERATION_FLAGS_SHIFT)) {
+			/* Firmware request VRAM reservation for SR-IOV */
+			adev->fw_vram_usage.start_offset = (start_addr &
+				(~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
+			adev->fw_vram_usage.size = size << 10;
+			/* Use the default scratch size */
+			usage_bytes = 0;
+		} else {
+			usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) << 10;
+		}
 	}
 	ctx->scratch_size_bytes = 0;
 	if (usage_bytes == 0)